Zilla FAQ19 Feb 2007 11:57 pm

Q: I was wondering how the Hairball relates to the controller. If you had a Z2K-HV Hairball connected to a Z1K-HV controller and didn’t have the setting right for the Z1K would it try to get 2000 Amps out of the Z1K controller?

A: No, the controller will never let the output go over its’ safe rating.

I’ve tried to standardize the parts on the Zillas as much as possible. Part of this means that the Hairball and the control board inside the Zillas are identical, run the same code and they are even calibrated the same for the Z1K and Z2K models. The only difference is that the shunt inside the Z2K controller is twice as big as the one in the Z1K and so allows twice as much current for the same measured values.

Anytime the Hairball requests a “ampoid” value of 200, the controller puts out full current. The Z1K reads the 200 at 5 amps per count for 1000 amps, and the Z2K reads it at 10 amps per count for 2000 amps.

The Z1K scaling option in the Hairball only changes how that value is displayed to the user. You can toggle it and see the displayed values change. So if you set the bit for a Z2K (scaling off) and set the current to 1600 amps while running a Z1K, you will get 800 amps at the output.

On the other hand, what once happened to Gone Postal is that they had it hooked to a Z2K controller while the Hairball was set for a Z1K. In that case entering 1000 amps on the terminal made the Z2K put out 2000 amps!

I hope this makes sense. When in doubt, listen to Rich:
At 11:45 AM -0800 1-30-05, Rich Rudman wrote:
I don’t mess with the 1k/2k bit anymore…..


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